Polyol ester compounds useful in preparation of a catalyst for olefins polymerization, process for preparing the same and use thereof

a technology of polyol ester and polymerization catalyst, which is applied in the field of compounds, can solve the problems of narrow distribution of the molecular weight lower isotacticity of the polymer obtained

Inactive Publication Date: 2005-05-05
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, above-mentioned olefin polymerization catalysts prepared utilizing disclosed aromatic dicarboxylic ester compound, 1,3-diether compound containing two ether groups and aliphatic dicarboxylic ester compound exist certain defects in actual use.
For instance, the catalytic activity of the catalyst with aromatic dicarboxylic ester compound is low, and the distribution of the molecular weight of the polymer obtained is narrow; although the catalyst w

Method used

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  • Polyol ester compounds useful in preparation of a catalyst for olefins polymerization, process for preparing the same and use thereof
  • Polyol ester compounds useful in preparation of a catalyst for olefins polymerization, process for preparing the same and use thereof
  • Polyol ester compounds useful in preparation of a catalyst for olefins polymerization, process for preparing the same and use thereof

Examples

Experimental program
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Effect test

example 1

Synthesis of 1,2-ethylene-glycol Dibenzoate

[0132] To 2.8 g (0.05 mol) 1,2-ethylene-glycol was added 50 ml tetrahydrofuran, then added 12.1 ml (0.15 mol) pyridine with stirring. To the resulting homogeneous mixture was slowly added 14.5 ml (0.125 mol) benzoyl chloride, and the mixture was stirred for 1 hour at room temperature, then heated refluxing for 4 hours. Upon completing the reaction, 70 ml water was added to dissolve the resulting salt. The mixture was extracted with toluene. Organic phase was separated, washed with saturated saline for two times, dried over anhydrous sodium sulfate. The solvent was removed to give a white solid. Recrystallization from ethyl acetate gave target product as a white crystal, and the yield was 92%. m.p. 69-70° C.

[0133]1HNMR δ (ppm):4.67 (s, 4H, CH2), 7.42-8.07 (m, 10H, ArH).

example 2

Synthesis of 1,2-butandiol Dibenzoate

[0134] To the reactor were added 1,2-butandiol (2.5 g), benzoyl chloride (7.8 g), pyridine (8.8 g) and tetrahydrofuran (70 ml). The reactants was mixed and heated refluxing for 4 hours, then cooled to room temperature. Water was added to the reaction system until the inorganic phase was transparent. Organic phase was separated. Inorganic phase was extracted with ethyl ether and then the organic phase was combined. The combined organic phase was washed with water, dried over anhydrous sodium sulfate. After concentrated, 3.95 g product was separated. 1H-NMR: δ (ppm) 1.0-1.1 (3H), 1.7-1.9 (2H), 4.4-4.6 (2H), 5.4-5.5 (1H) and 7.4-8.2 (10H).

example 3

Synthesis of 2,3-butandiol Dibenzoate

[0135] Synthesis procedure was similar to that described in Example 2, and 4.4 g of product was obtained from 2,3-butandiol. 1H-NMR: δ (ppm) 1.4-1.6 (6H), 5.3-5.5 (2H), 7.4-8.2 (10H).

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Abstract

The present application relates to polyol ester compounds, having general formula (I): R1CO—O—CR3R4-A-CR5R6—O—CO—R2 (I) wherein, R, and R2 groups, which may be identical or different, can be substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms, R3-R6 groups, which may be identical or different, can be selected from the group consisting of hydrogen, halogen or substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms, R1-R6 groups optionally contain one or more hetero-atoms replacing carbon, hydrogen atom or the both, said hetero-atom is selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus and halogen atom, two or more of R3-R6 groups can be linked to form saturated or unsaturated monocyclic or polycyclic ring; A is a single bond or bivalent linking group with chain length between two free radicals being 1-10 atoms, wherein said bivalent linking group is selected from the group consisting of aliphatic, alicyclic and aromatic bivalent radicals, and can carry C1-C20linear or branched substituents; one or more of carbon atom and/or hydrogen atom on the substituents can be replaced by a hetero-atom selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus, and halogen atom, and two or more said substituents on the linking group as well as above-mentioned R3-R6 groups can be linked to form saturated or unsaturated monocyclic or polycyclic ring. The compounds of formula (I) find use in preparing a catalyst for olefin polymerization.

Description

CROSS REFERENCE OF RELATED APPLICATION [0001] The present application claims priority based on Chinese Patent Application No. 02100896.5, filed on Feb. 7, 2002, which is incorporated herein by reference in its entirety and for all purposes. TECHNICAL FIELD [0002] The present invention relates to a type of novel compounds, a process for preparing them and their use in preparing a catalyst for olefin polymerization, in particular, to a compound comprising two or more ester radicals, a process for preparing them and their use in preparing a catalyst for olefin polymerization. TECHNICAL BACKGROUND [0003] It is well known that solid titanium catalyst component with magnesium, titanium, halogen and electron donor as basic compositions can be used in the polymerization of olefin CH2═CHR, especially in the polymerization of alpha-olefins having 3 or more carbon atoms, higher isotactic polymer can be obtained in higher yield. An electron donor compound is one of indispensable compositions of...

Claims

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Application Information

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IPC IPC(8): C07C67/14C07C69/007C07C69/013C07C69/28C07C69/54C07C69/618C07C69/76C07C69/78C07D307/42C07D307/68C08F4/654C08F110/06
CPCC07C69/007C07C69/16C08F110/06C07D307/68C07D307/42C07C2103/18C07C69/28C07C69/618C07C69/76C07C69/78C08F4/651C08F2500/15C08F2500/04C07C2603/18C08G63/02C08G63/682C08G63/688C08G63/692
Inventor GAO, MINGZHIWANG, JUNLI, CHANGXIULI, JIYULI, TIANYILI, XIANZHONGMA, JINGXING, LINGYANLIU, HAITAO
Owner CHINA PETROCHEMICAL CORP
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